Add ptr_util.h from base until std::make_unique<> available

fpdfsdk/fpdf_progressive.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "public/fpdf_progressive.h"
 
 #include "core/fpdfapi/cpdf_pagerendercontext.h"
 #include "core/fpdfapi/fpdf_page/cpdf_page.h"
 #include "core/fpdfapi/fpdf_render/cpdf_progressiverenderer.h"
 #include "core/fxcrt/fx_memory.h"
 #include "core/fxge/cfx_fxgedevice.h"
 #include "core/fxge/cfx_renderdevice.h"
 #include "fpdfsdk/fsdk_define.h"
 #include "fpdfsdk/fsdk_pauseadapter.h"
 #include "public/fpdfview.h"
+#include "third_party/base/ptr_util.h"
 
 // These checks are here because core/ and public/ cannot depend on each other.
 static_assert(CPDF_ProgressiveRenderer::Ready == FPDF_RENDER_READER,
               "CPDF_ProgressiveRenderer::Ready value mismatch");
 static_assert(CPDF_ProgressiveRenderer::ToBeContinued ==
                   FPDF_RENDER_TOBECOUNTINUED,
               "CPDF_ProgressiveRenderer::ToBeContinued value mismatch");
 static_assert(CPDF_ProgressiveRenderer::Done == FPDF_RENDER_DONE,
               "CPDF_ProgressiveRenderer::Done value mismatch");
 static_assert(CPDF_ProgressiveRenderer::Failed == FPDF_RENDER_FAILED,
               "CPDF_ProgressiveRenderer::Failed value mismatch");
 
 DLLEXPORT int STDCALL FPDF_RenderPageBitmap_Start(FPDF_BITMAP bitmap,
                                                   FPDF_PAGE page,
                                                   int start_x,
                                                   int start_y,
                                                   int size_x,
                                                   int size_y,
                                                   int rotate,
                                                   int flags,
                                                   IFSDK_PAUSE* pause) {
   if (!bitmap || !pause || pause->version != 1)
     return FPDF_RENDER_FAILED;
 
   CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
   if (!pPage)
     return FPDF_RENDER_FAILED;
 
   CPDF_PageRenderContext* pContext = new CPDF_PageRenderContext;
-  pPage->SetRenderContext(WrapUnique(pContext));
+  pPage->SetRenderContext(pdfium::WrapUnique(pContext));
   CFX_FxgeDevice* pDevice = new CFX_FxgeDevice;
   pContext->m_pDevice.reset(pDevice);
   CFX_DIBitmap* pBitmap = CFXBitmapFromFPDFBitmap(bitmap);
   pDevice->Attach(pBitmap, !!(flags & FPDF_REVERSE_BYTE_ORDER), nullptr, false);
 
   IFSDK_PAUSE_Adapter IPauseAdapter(pause);
   FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
                          rotate, flags, FALSE, &IPauseAdapter);
 
   if (pContext->m_pRenderer) {
@@ skipping 27 matching lines @@
   if (!pPage)
     return;
 
   CPDF_PageRenderContext* pContext = pPage->GetRenderContext();
   if (!pContext)
     return;
 
   pContext->m_pDevice->RestoreState(false);
   pPage->SetRenderContext(std::unique_ptr<CPDF_PageRenderContext>());
 }